1210220011111 has 8 divisors (see below), whose sum is σ = 1213891618160. Its totient is φ = 1206548880768.

The previous prime is 1210220011079. The next prime is 1210220011151. The reversal of 1210220011111 is 1111100220121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1210220011111 - 2⁵ = 1210220011079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210220011091 and 1210220011100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210220011151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5344780 + ... + 5566606.

It is an arithmetic number, because the mean of its divisors is an integer number (151736452270).

Almost surely, 2^{1210220011111} is an apocalyptic number.

1210220011111 is a deficient number, since it is larger than the sum of its proper divisors (3671607049).

1210220011111 is a wasteful number, since it uses less digits than its factorization.

1210220011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238353.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1210220011111 its reverse (1111100220121), we get a palindrome (2321320231232).

The spelling of 1210220011111 in words is "one trillion, two hundred ten billion, two hundred twenty million, eleven thousand, one hundred eleven".